Articles

Department of Medicine, the University of Southern California School of Medicine, Los Angeles, Calif.

Department of Public Health, the University of Southern California School of Medicine, Los Angeles, Calif.

* Presented in part at the meeting of the Western Society for Clinical Research, January, 1960, Carmel, Calif. Supported by a grant (A-2989) from the National Institute of Arthritis and Metabolic Diseases, Bethesda, Md.